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I needed the manual immediately and I got it immediately. I couldn't find this manual anywhere else on the net. The site was easy to traverse, and the price was very reasonable. I'll definitely be back for any future needs.
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I received a good service manual, with good resolution. Improve the instructions for the purchase because they are not well understood.
For the rest, so good.
Thanks Angel.
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Very good documentation for the Grundig 2077 model (as well as similar 800/900/1000 series radios). The first two pages are a summary of reception specifications and output capability. The third page is the tuner dial indicator and dial cord routing diagram. the final ~5 pages are the schematics for the various models (including 2077). The scan quality of the schematics are good, adn can be easily read if zoomed in. The documents are in German, not English as stated. It would have been nice to have the tuning sequence and settings, and some trouble shooting materials... or component and wiring map.
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Perfect like it was descriped, Perfect like it was descriped
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Very good detail, all pages clear, exactly what I needed
CD-C1600C
� Playback can only be performed when a disc is loaded.
Is the Focus servo active? (Can you hear it working?) Yes Does the DRF signal change from "L" to "H"?
No
Check the laser diode driver. Check the area around IC1(16) - (21) (focus servo circuit).
No Yes Is HF waveform normal (see the Fig.40-1,2)? Yes Check the tracking system. No
If the disc is not turning, the DRF should not change to "H".
Check the spin system. Yes
Level is abnormal. Yes Waveform is unstable. Yes
Check the periphery of IC1 pins 41 and 42. Check the spin system.
HF 1.0V/DIV 0.5µsec/DIV(DC) (When playing back the disc)
0.5s 1.00 V IC1 16 FD 0.5s 10.0 V IC2 13 CLV+ 0.5s 10.0 V IC1 54 DRF 0.5s 2.00 V IC1 7 TE
Waveform in case of normal playback
2 1 3 4
Figure 40-1 � Check the tracking system.
Check waveform of IC1 pin 7 (TE).
Figure 40-2
The waveform shown in Fig. 40-3 appears, and nodisc state appears soon.
Yes
Tracking servo is inoperative. Yes
Check the periphery of IC 1 pin 8 to pin 15, and IC 5 to CNP2.
Play is possible in TEST mode.
Yes
Although IL is possible, play is impossible. Yes
Normal jump is impeded, and the program top Yes cannot be reached.
Check the periphery of IC 1 pin 14.
Data cannot be read.
Yes
Check the VCO-PLL system.
5ms 1.00 V IC1 7 TE
4
5 ms 5.0 V IC1 54 DRF
3
Figure 40-3
� 40 �
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